British Police are trying to identify a man responsible for knocking a 16-year-old girl unconscious around 12:36 PM (GMT) last week on High Street in Plaistow, London (as seen in the CCTV footage). Anyone with information about this incident should contact the Newham Violent Crime Unit (020-8217-5890) or Crimestoppers (0800-555-111) with the reference number S/194/12.

Editor's Note: This video contains violent footage that may not be suitable for minors.

The United Nations has called for passage of an anti-discrimination law after Daniel Zamudio, a gay man who was brutally attacked March 3 in Chile, died from his injuries last week. Zamudio was apparently targeted for his sexual orientation. His four attackers, who have been charged with aggravated murder, beat him for an hour, burned him with cigarettes, and carved Nazi swastikas on his body.

"The case should be seen in the wider context of hate-motivated violence against lesbian, gay, bisexual and transgender persons around the world," said Rupert Colville, a spokesman for the U.N. high commissioner for human rights.